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Biomass secondary conversion process

A biomass and process technology, applied in the field of biomass secondary conversion process, can solve the problems of large amount of waste water and low calorific value of oil products, and achieve the effects of increasing calorific value, improving liquefaction yield and reducing pores

Active Publication Date: 2020-02-04
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the existing biomass liquefaction process, such as dehydration of biomass raw materials, strict requirements on reaction atmosphere and catalyst, low calorific value of oil products and large amount of waste water, and further provide A secondary biomass conversion process that does not require dehydration of biomass raw materials, adopts an atmosphere containing CO in the reaction atmosphere, has high calorific value of oil products, low waste water generation, and even no waste water

Method used

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  • Biomass secondary conversion process

Examples

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Effect test

Embodiment 1

[0072] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0073] Preparation of biomass slurry:

[0074] collecting corn stalks, the water content of which is 5-20wt%, and then pulverizing them to a particle size of 0.2 μm-5 cm by using an ultrafine pulverizer;

[0075] Compress the crushed straw with a plodder, the compression pressure is 2.5MPa, the compression temperature is 45°C, and compressed to a true density of 1.0kg / m 3 ;

[0076] The compressed and molded straw was pulverized again with a jet mill, passed through a 100-mesh sieve to obtain straw powder, and 40 kg of straw powder was weighed and mixed with a catalyst to obtain a mixed powder;

[0077] 80kg of waste lubricating oil, mixed powder, and 4kg of water were mixed, and a colloid mill was used for grinding and pulping. The grinding and pulping time was 15 minutes to obtain a biomass slurry.

[0078] The catalyst added in the slurry is an iron-based catalyst w...

Embodiment 2

[0090] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0091] Preparation of biomass slurry:

[0092] Collecting wheat straw, the water content of which is 10-20wt%, and then pulverizing it to a particle size of 0.2μm-5cm by using an ultrafine pulverizer;

[0093] Compress the crushed straw with a plodder, the compression pressure is 0.5MPa, the compression temperature is 60°C, and compressed to a true density of 0.75kg / m 3 ;

[0094] The compressed and molded straw is pulverized again with a jet mill, and passed through an 80-mesh sieve to obtain straw powder;

[0095] 100kg of washing oil was mixed with 100kg of straw powder and 3kg of water, and a colloid mill was used for grinding and pulping. The grinding and pulping time was 8 minutes to obtain biomass slurry.

[0096] The catalyst added in the slurry is an iron-based catalyst with a content of 1 wt%, and the average particle diameter of the added iron-based catalyst...

Embodiment 3

[0110] This embodiment provides a biomass secondary conversion process, comprising the following steps:

[0111] Preparation of biomass slurry:

[0112] Collect red algae, air-dry until its water content is lower than 20wt%, and crush to a particle size of 0.2 μm-5cm;

[0113] Compress the pulverized red algae into a tablet press with a compression pressure of 3MPa, a compression temperature of 40°C, and compress to a true density of 0.95kg / m 3 ;

[0114] The compressed red algae is pulverized again with a jet mill, and passed through a 100-mesh sieve to obtain red algae powder;

[0115] Take 40 kg of pulverized red algae powder, mix with 50 kg of waste engine oil and 4 kg of water, grind and make slurry for 12 minutes to obtain biomass slurry.

[0116] The catalyst added in the slurry is an iron-based catalyst with a content of 1 wt%, and the average particle diameter of the added iron-based catalyst is 10 μm.

[0117] Iron catalyst:

[0118] The iron-based catalyst i...

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Abstract

The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and particularly relates to a biomass secondary conversion process. According to the conversion process, at least one selected from iron oxide compounds, desulfurization waste agents of the iron oxide compounds and regenerated substances of desulfurization waste agents of iron oxide compounds is used as a catalyst, water-containing slurry is adopted, meanwhile, the molar ratio of iron element to sulfur element in a reaction system is controlled, and then, free radical polycondensation of organicmatter in a cracking process is found to be effectively blocked by carbonylation in the presence of CO, and conversion and active-hydrogen hydrogenation of CO and water are realized. In a conversionreaction, organic matter, particularly biomass solids, do not need to be dehydrated, and can be directly used for carrying out a conversion reaction, and water can be additionally added into biomass liquid or mineral oil, so that the liquefaction yield is improved, the calorific value of a prepared oil product can be improved, and generation of a large amount of water is avoided after the conversion reaction is finished.

Description

technical field [0001] The invention belongs to the technical fields of biomass utilization, energy and chemical industry, and specifically relates to a biomass secondary conversion process. Background technique [0002] With the rapid development of social economy, fossil non-renewable energy sources such as coal, crude oil, natural gas, and oil shale are becoming increasingly exhausted. At the same time, the CO produced by the combustion of such fossil non-renewable energy 2 , SO 2 , NO x Environmental pollution caused by pollutants such as pollutants is also becoming more and more serious, which forces human beings to think about ways to obtain energy and methods to improve the environment. [0003] At present, biomass liquefaction technology has become a new means of obtaining energy. This technology is an important part of the utilization of biomass resources. The liquefaction mechanism is as follows: biomass is first cracked into oligomers, and then dehydrated and de...

Claims

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Application Information

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IPC IPC(8): C10G1/08C10G1/00
CPCC10G1/002C10G1/08C10G2300/1011
Inventor 林科郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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